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你好, 我在看例子的时候也做了试验,CALayer.presentationLayer为什么要使用valueForKeyPath去获取frame,试验了一下,可以直接获取使用.frame,还是说有什么情况是会出现问题的。 麻烦回答一下,谢谢大神。
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你好,
我在看例子的时候也做了试验,CALayer.presentationLayer为什么要使用valueForKeyPath去获取frame,试验了一下,可以直接获取使用.frame,还是说有什么情况是会出现问题的。
麻烦回答一下,谢谢大神。
The text was updated successfully, but these errors were encountered: